Firearm accessory mount rail



FIG. 1 is a top perspective view of a firearm accessory mount rail, showing my new design;

FIG. 2 is a another top perspective view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a front elevation view thereof.

The broken lines are for illustrative purposes and represent environmental structure and unclaimed portions of the invention and therefore form no part of the claimed design. The dash-dot lines are for illustrating boundaries of the claimed portions of the invention and form no part of the claimed design. 

CLAIM The ornamental design for a firearm accessory mount rail, as shown and described. 